Lower portion of a cup



FIG. 1 is a perspective view of a lower portion of a cup showing my new design.

FIG. 2 is a side elevational view thereof, all sides being the same.

FIG. 3 is a top plan view of the lower portion of a cup of FIG. 1; and,

FIG. 4 is a bottom plan view of the lower portion of a cup of FIG. 1.

The portion of a cup shown in broken lines is for illustrative purposes only, and forms no part of the claimed design. 

The ornamental design for a lower portion of a cup, as shown and described. 